Sony PS-X600
Sony PS-X500
(1981 - 1982)

Third generation and lower-end versions of the Biotracer tonearm - far more reliable than the original PS-B80 :)
Above in the lineup was the tangential, excellent and well reviewed in Japan PS-X800 and the rare PS-X700. Fourth gen' would be the PS-X555ES and... there would be no fifth generation.

Simple, reliable and surprisingly musical - don't hesitate to put a good MC cartridge on your PS-X600, like Denon DL-160 ! A fair review of the PS-X600 turntable can be found here.